EP0928866A2 - Lock with latch bolt - Google Patents

Abstract

A roller (27) is housed in an opening (26) in the angled bolt head surface (20) and its radius protrudes beyond the angled surface. The lock (1) contains a bolt (8) whose head (9) has an a surface sloping at an angle to the bolt movement direction and a catch surface (15) extending parallel to the bolt movement direction. The bolt head end wall (21) can be retracted into a cuff opening (19).

Description

The invention relates to a lock with a latch, which an oblique to their direction of displacement Inclined trap with rotating body arranged therein and one arranged parallel to the direction of displacement Forms restricted area, the trap forehead up to an escape position to the forend opening is retractable.

In practice, a distinction is made between locks with normal latches, Crank traps and roller traps. At the crank traps the rotating body is designed as a double-armed crank, of which a crank arm protrudes over the slope of the trap, while the other crank arm with the back of the Stulpes interacts. When closing the door Actuation of the striking plate becomes the slant of the latch outstanding crank arm connected with a relocation of the crank trap. The advantage such locks is that they are a easy, quiet sliding of the crank trap into the Allow striking plate. Hence such locks preferably in hospitals, old people's homes, administration buildings etc. used. A disadvantage of such a design is, however, that no reversibility of having the rotating body equipped case is made possible.

The object of the invention is based on the object to specify a lock of the type in question at which is the trap with the same closing properties is designed to be reversible.

This task is first and foremost a lock with the features of claim 1 solved, it is based on the fact that the rotating body as in an opening of the trap slope, with her Curve formed over the sloping surface protruding role is.

The subclaims relate to advantageous further developments the solution according to the invention.

As a result of such a configuration is a generic Lock specified with a trap, in which despite the arrangement of a rotating body within the trap the same is possible, for example the lock of right to left or vice versa. The closing properties are the same as for a Crank trap realized by the rotating body as a roller is designed, the rounding of the inclined surface, that is Overhanging pitches. It is only going towards it make sure that the faceplate opening for the passage of the trap, seen in the floor plan, which is symmetrical Outline of the trap with the trap inside Role allowed. With a crank trap this is not possible because the inside crank arm one appropriate space within the lock housing requires which free space only in one installation position given is. Manufacturing costs are saved, to design the rotating body as a role and not as a crank. For example, it is possible to use the role made of wear-resistant plastic, while metal is chosen for the trap itself. An advantageous one Further training can be seen in the fact that the bearing axis if the trap is closed immediately before Forend lies. This brings the possibility of a big one The roll protrudes both from the sloping trap also as well as in front of the forend. Still is not a disability when the trap is moved inwards, since the extension of those facing the sloping ceilings Face plate inner wall touches the apex of the roller.

It should also be emphasized that the roller radius is smaller is the center distance of the roller from the restricted area Cases. Furthermore, the diameter of the roll is smaller than the length of the trap slope, so that the between the trap forehead and the opening remaining length can serve as a sliding surface. Technically simple it turns out that the role in the diameter Opening, in particular milling out the trap slope lies rotatably supported by a pin. The Storage of the roll in the opening is such that the roller axis approximately in the middle between the striking plate and Forend lies. Enlarged during the closing process himself in the final stages of closing the role lever arm taking effect. For a trouble-free Close it has a beneficial effect that the role about is barrel-shaped. A stable design the trap results from the fact that the parallel the width of the opening to the forend is smaller than the width of the trap slope, so that both sides enough "meat" on the face of the roll Trap head is present. Finally there is that Highlight reversibility of the trap. Need it the forend opening and the latch only a mirror image To have design.

Figur 1

eine Ansicht eines erfindungsgemäßen Schlosses, bei welchem die Schloßdecke im Bereich der Falle weggebrochen ist;

Figur 2

die Frontansicht des Schlosses;

Figur 3

in vergrößerter Darstellung den Schnitt nach der Linie III-III in Figur 1 und

Figur 4

den Schnitt nach der Linie IV-IV in Figur 3.

An embodiment of the invention is explained below with reference to the drawings. It shows:

Figure 1

a view of a lock according to the invention, in which the lock cover has broken away in the area of the trap;

Figure 2

the front view of the castle;

Figure 3

in an enlarged view the section along the line III-III in Figure 1 and

Figure 4

the section along the line IV-IV in Figure 3.

The illustrated, designed as a mortise lock Castle 1 has a faceplate 2 with attached Castle floor 3. Extends parallel to the castle floor 3 a castle ceiling covering the castle furnishings 4.

Parts of the castle interior are one in the lower area of the lock housing led bolt 5, which by means of a profile locking cylinder, not shown is relocatable. To accommodate the locking cylinder serves an installation opening 6 in the castle floor 3 and Lock cover 4. Store above installation opening 6 Lock base 3 and lock cover 4 a follower 7, by means of which one in the upper area parallel to the Bolt 5 arranged trap 8 is guided.

In detail, the trap 8 is composed of one Trap head 9 and a trap tail 10. One on the Trap tail 10 loaded spring 11 loaded the trap 8 in the direction of advance. Stepping forward is limited the trap 8 by one on the trap tail provided transversely to the direction of displacement of the Trap-extending boom 12. This is in its Position held by a compression spring 13, which is dimensioned stronger than the latch spring 11. An arm 14 of the trigger nut 7 engages on the arm 12 on.

The trap head 9 has a parallel to the direction of displacement the trap 8 arranged blocking surface 15 and her a guide surface 16, which is located opposite in parallel both surfaces on adjacent inner wall openings 17 or 18 of a faceplate opening 19 slide past. The trap head 9 then has a trap slope 20. This goes from the guide surface 16 at the level of Forend opening 19 and extends up to that as a narrow surface designed trap forehead 21.

Seen in the direction of cuff 2, the trap head has 9 grooved, identically designed latch areas 22, 23. These are the narrow walls 24, 25 of the Assigned faceplate opening 19. Because of this configuration it is possible to position the trap in a 180 ° position to install.

The trap head 9 carries a rotating body, which as in an opening 26 of the roller 27 lying in the sloping camber is trained. The latter towers over with its roundness the trap slope 20. In particular, FIG. 3 shows that the bearing axis 28 of the roller 27 when stepped forward Trap 8 is immediately in front of the faceplate 2. With regard to the opening 26, this is a Diameter of the roller 27 adapted milling of the trap slope 20, in which the role by means of a triangular support fits the shape. For storing the Roll 27 serves to penetrate it in the longitudinal direction Pin, which represents the bearing axis 28 and which in the material located on the side of the opening 26 in the Clamp fit. For this purpose there is a receiving bore 29 available for the ends of the bearing axis 28. The ends of the pen extend to the bottom of the grooved Trap narrow surfaces 22, 23.

As the figures illustrate, the roller is 27 barrel-shaped. The roller axis 28 extends approximately in the middle between a cooperating with the trap 8 Angle striking plate 29 and the faceplate 2. It it can also be seen from FIG. 3 that the roller radius is smaller than the center distance which can be rotated around the Bearing axis 28 mounted roller to the locking surface 15.

There is such a dimensioning of the role 27, that their diameter is smaller than the length of the Sloping slope 20. This looks like the one opening side wall 26 'approximately from the transition area between Sloping slopes 20 and guide surface 16 goes out while the other opening side wall 26 '' in front of the Fallenstirn 21 ends. It is also provided that the Width x of the opening parallel to the face plate 2 26 is smaller than the width y of the bevel 20.

Then Figure 3 shows that the imaginary extension of the the bevel 20 facing the inner wall opening 18 tangent to the vertex S of the roller 27. Therefore the trap head 9 can move freely into the faceplate opening 19 can be pushed back.

When closing the lock 1 with the invention equipped door, the roller 27 acts on the angle striking plate 29 combined with a push back the trap 8. Changed in the course of the closing movement the lever arm effective on the roller 27 between Angle striking plate 29 and bearing axis 28. After the Roll 27 passes the corner of the angle striking plate has the trap area remaining beyond the roll effective.

Because of the design described above, it is possible despite the use of a roller 27 in the trap head 9, turn the trap 180 °.

All the features disclosed are essential to the invention. In the disclosure of the application is hereby also the Disclosure content of the associated / attached priority documents (Copy of the pre-registration) in full included, also for the purpose, characteristics of this Documents in claims of the present registration with to record.

Claims (10)

Locked with a trap, which is oblique to their direction of displacement has running slope slopes (20) and one arranged parallel to the direction of displacement Forms barrier area (15), the trap end (21) retractable into an alignment to the faceplate opening (19) is characterized in that the rotating body as in an opening (26) of the trap slope (20), with their rounding over the inclined surface ( 20) projecting roller (27) is formed. Lock according to claim 1 or in particular according to it, characterized in that the bearing axis (28) of the Role (27) with the trap (8) closed immediately lies in front of the faceplate (2). Lock according to one or more of the previous ones Claims or in particular according thereto, characterized in that that the imaginary extension of that of the trap slopes (20) facing the faceplate inner wall (18) Vertex (S) of the roller (27) tangent. Lock according to one or more of the previous ones Claims or in particular according thereto, characterized in that that the roller radius is smaller than the center distance the roller (27) to the locking surface (15). Lock according to one or more of the previous ones Claims or in particular according thereto, characterized in that that the diameter of the roller (27) is smaller than the length of the trap slope (20). Lock according to one or more of the previous ones Claims or in particular according thereto, characterized in that that the roller (27) in the diameter Opening (26), in particular milling out the trap slopes (20) rotatably mounted about a pin (bearing axis 28) lies in. Lock according to one or more of the previous ones Claims or in particular according thereto, characterized in that that the bearing axis (28) approximately in the middle between Strike plate (29) and face plate (2). Lock according to one or more of the previous ones Claims or in particular according thereto, characterized in that that the roller (27) is approximately barrel-shaped. Lock according to one or more of the previous ones Claims or in particular according thereto, characterized in that that the width parallel to the faceplate (2) (x) the opening (26) is smaller than the width (y) Sloping traps (20). Lock according to one or more of the previous ones Claims or in particular according thereto, characterized in that that the trap (8) is reversible.

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